<?php
header('Content-type: image/svg+xml');
 
// php://output outputs to the page
$v = new CairoSvgSurface('php://output', 400, 400);
 
// Context is "tool" that "paints" the Surface
$c = new CairoContext($v);
$c->fill();
 
// Nuance: x  {R,G,B} | 0 <= x <= 1
$c->setSourceRGB(1, 0, 0);
$c->setLineWidth(50);
$c->arc(200, 200, 100, 0, 2 * M_PI);
$c->stroke();
 
$c->setSourceRGB(0, 0, 0.6);
$c->rectangle(0, 160, 400, 75);
$c->fill();
 
$v->finish();
?>